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9. Serene

Length: 440 feet Top speed: N/A Total power: N/A

Built by Fincantieri Yachts and designed by Monaco’s Espen Oeino designers, the Serene is set to launch in 2010 and is currently being outfitted, according to SuperYachtTimes.com. When completed, it will be the largest yacht ever to be built in Italy.

The yacht began construction in 2007 and is considered to be one of the most technologically advanced super yachts currently being built. It features seven decks, two helicopter landing platforms, storage for a large submarine and a large internal seawater pool.